Piston-rod.



A. S. VOGT.

PISTON ROD. APPLICATION TILED FEB. 24, 1914.

Patezited 001;. 6, 1914.

2 BHEETSSHEET I.

F GJ

WITNESSES 1N VENT OR Attorney A. s. VOGT. PISTON ROD.

APPLICATION TILED IEB.24, 1914.

Patnted 0013.6,1914.

2 SHBBTSSHHET Z.

Application filed February 24, 191% 55. oo'r. a sulresiding in Al- T and fi trate of on new Piston-R0cls l'llmxhig; i" s specification. This invention r 1; to a novel pisfon rod cuns rif 11 used clue in connection coking mass, also of connterbalance mhlecl to the ClllV 13 s, and the 11186 is a chm. c ricccssry to Unportuni power iitlng clelocom olive.

oorhenls have bee; used, to re ighc 0 wire pistons and p ll ultimate sucee s, 'ial. this present vention has in e ln tion of Weight of the. re proooting parts lessening the Weight of l e piston rod which is one of ieciprocoiing parts. and teiiiplstes a. novel and ion roc i i. .j h. {I The col: rgerl porno-o a view of "t e piston A uml of t certain portions with threads. -.e Cfilli-illllClTlOll iltop plan vision rod.

31102281 will f .,,-ction;1l new Qit m Specification. of Le Serial 11o. 8201523.

Similar reference chersclers leslgimte corresponding p rts throughout the several figures of the drawings.

Referring; to the device showri in the accompanying drawings, it will be, OlJS6."'3(l that ihe construe-lion and arrangement the some renders it especially useful. a pislon rocl for locoiiiotire cylinders, out the some time ll:- wlll be understood the? application is not limited to the use of the rod in on engine 01 this character.

ln Fig. 1 the hollow piston rod is shown in connection with the parts of a. steam engins m which it particularly relates, namely, :1 portion of the valve gear A. crosshcad and cylinder C.

In carrying-out the present invention take steel shaft 1 01? sullicient one. rough diameter to form the finished piston rocl. This steel shaft 1 first rough turn leaving the crossheacl encl 3, the piston fil', portion 4 and the pistor'r rocl exieiision shoe,

it end 5 of larger diameter than the remaining portion (a and 7) of the rod: Aft-er the rough turning is accomplished I proseed to drill a uniform, diameter of hole 2 lengthwise through the rod, using'the lathe center as a drill center. After the central hole 2 has been drilled I proceed to heat the enlarges portions of the lOfl for lhe prirpose of swsging or squeezing together onller steam hammer, togeihei with proper" shaped (lies, to properly force the periphery of the rod toward the center. This aclion has the effect of reducing the eliameter oi the hole 2 at the ero. :head end 3 of-thc rod. the piston is portion 4 and thepiston rod guidev shoe cncl as well as to increase the density of the steel at these portions. After this operation has been completed, the rocl' is then heart. trenied and finishetl ready to he assembled with the locomotive.

In finishing the crossheacl portion 3 of the rocl 1 the me is tapered toward the end of forrnecl with a keeper,

the rod as at' 0 or crossheod key, slot 7. The taper l' or the, end of the T06. not only permits the same to firmly sent in the socket 8 in the portion 9 of he crosshcud B so that it may be readily secured ah eto, but at the some time facilitates l. a enibling of the parts.

The (Elltiill or Piston head portion l is provideail {luring the finishing step with. on ahutmen fish 11 which tapers and terminates away from the said flange in a. portion 12 which is 10 and a taperenl head seal;

snbriequentiy throzi ieci. Thus it will be appzn'cnt that this construction provides for carrying the piston head 13 so that it may pcrfonn its n nil function in the cylinders C and a, the some time be secured firmly in place by HIQQUES of the chim jiing not let adjn t-ihhr on the thz'ondod portion so that it. may chimp the said head 13 octoi, 11 and the! flange 10.

* ith reference to ho shoe gnidc end 5 of the rod it Wii]. he noticed that the some is reduced to cylindrical p rtions of different diametci the largest portion 15 being designed to i'ccoii'c the wear shoe 16 that slides in the gnidewny G, whilo the SIXiZEiiC-l' portion 17 is threaded to receive :1 not LP to lock the shoe to the end of the rod.

A distinctive feature of the present invention resides in forming thov rod 1. with cicnsificd portions to strengthen the some where it is to he connected With other engine parts, and the some time leaving the rod with suitable bearing portions 19 and :20 between said dcnsified portions which stiii have their original diameter and bore. Tho said hearing" portions 19 and 20 are adapted to slide through tho ends of the cylinder C in the usual manner but by reason of their construction considci'ahic strength is provided. While the some time having the additionzii feature of being much lighter than tho oi'dinocy solid piston rod T0111 the foregoing description it is bothnt it wiii h whom"; ton rod contcinphito c thoronghi; pinch ti'ni construction especially d and h dent to ,--oiid constructions ii dcviccs of a siniiihlr it is ociici cd that other? advani'iigos of the in'vcntion will 'oc apparentwithoot i'lo-thoi' (.iQHClipiiOlL P i cinim: J. A hoiiow piston rod for cng gincs hmadnptcd to lCdL'iCQ the wei 'ht n incdi: piston head portion, and a .i'cduccd .'hn hic:d gmoc shoe portion 1 n'uonig cizni'iping nut.

In testimony Whci'cot aiin: my signature in. presence oi two witncsscs.

Wit/1e N EMOR :5 Gnomo 

